Question

Can you help me what I did wrong and help me solve this equation

Answer 1

Remark

The order is not quite correct.

- 7 + (-11 * 5 - - 7) ÷ - 6

The - - 7 becomes a plus

- 7 + (- 55 + 7) ÷ -6

This is where the real problem is. -55 + 7 goes down. This gives - 48

- 7 + [( - 48) ÷ - 6]

You do the division by - 6 before adding. Adding - 7 to the result of the division is your very last step. Think BedMas.

-7 + (8)

The 8 is the result of the division. -48/-6 = 8. the -7 and the 8 are added. You get 1.

1 Answer

Answer 2

The --7 in parentheses means +7. The symbol "÷" means "divided by". Division is done before addition or subtraction.

`-7+(-11\cdot 5--7)/ -6=-7+(-55+7)/ -6\qquad\text{multiply in parentheses, simplify $--7$}\\\\=-7+(-48)/ -6=-7+8\\\\=\bf{1}`

Whenever an even number of minus signs is involved in multiplication or division, the result is a positive number. An odd number of minus signs results in a negative number.